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From: Thomas Gleixner <tglx@linutronix.de>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RCF PATCH] genirq/debugfs: Triggering of interrupts from userspace
Date: Wed, 16 Aug 2017 16:50:28 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1708161645220.1987@nanos> (raw)
In-Reply-To: <20170720155135.31962-1-marc.zyngier@arm.com>

On Thu, 20 Jul 2017, Marc Zyngier wrote:
> When developing new (and therefore buggy) interrupt related
> code, it can sometimes be useful to inject interrupts without
> having to rely on a device to actually generate them.
> 
> This functionnality relies on the irqchip driver to expose
> a irq_set_irqchip_state(IRQCHIP_STATE_PENDING) callback.

I like that, but can we please extend that to utilize the irq resend
mechanism:

	desc = ....;

	chip_bus_lock(desc);
        raw_spin_lock_irq(&desc->lock);

	if (has_set_state(desc))
		set_state(desc);
	else
		check_irq_resend(desc);

or something to that effect?

Thanks,

	tglx

  reply	other threads:[~2017-08-16 14:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-20 15:51 Marc Zyngier
2017-08-16 14:50 ` Thomas Gleixner [this message]
2017-08-16 14:58   ` Marc Zyngier

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